As soon as you take responsibility for your life, you can change the world.
I think investment psychology is by far the more important element, followed by risk control, with the least important consideration being the question of where you buy and sell.
As long as you learn something from a loss, it's not really a loss.
When your account has these massive swings up and down, there's a tendency to feel a rush when the market is going your way and devastation when it's going against you. These emotions do absolutely nothing to make you a good trader. It's far better to keep the equity swings manageable and strive for a sense of balance each day, no matter what happens.